JPS59145732U

JPS59145732U - Tape recorder control circuit

Info

Publication number: JPS59145732U
Application number: JP3769483U
Authority: JP
Inventors: 黒柳　芳弘
Original assignee: 三洋電機株式会社
Priority date: 1983-03-16
Filing date: 1983-03-16
Publication date: 1984-09-28

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図示した回路は、本考案の制御回路の一実施例・である
。主な図番の説明、１・・・・・・第１磁気ヘツド、２・
・・・・・第１前置増幅回路、３・・・・・・第２磁気
ヘツド、４・・・・・・第２前置増幅回路、７・・・・
・・主増幅回路、８・・・・・・スピーカー、１０・・
・・・・整流回路、１１・・・・・・直流電圧出力回路
、１２・・・・・・時定数回路、１３・・・・・・コン
デンサー、１４・・・・・・第１抵抗、１５・・・・・
・第２抵′抗、１６・・・・・・選択スイッチ、１７・
・・・・・トリガー回路、１８・・・・・・フリップフ
ロップ回路、２１・・・・・・第１電動機、２２・・・
・・・第１駆動トランジスター、２４・・・・・・第２
電動機、２５・・・・・・第２駆動トランジスター。The illustrated circuit is one embodiment of the control circuit of the present invention. Explanation of main drawing numbers, 1...First magnetic head, 2.
...First preamplifier circuit, 3...Second magnetic head, 4...Second preamplifier circuit, 7...
...Main amplifier circuit, 8...Speaker, 10...
... Rectifier circuit, 11 ... DC voltage output circuit, 12 ... Time constant circuit, 13 ... Capacitor, 14 ... First resistor, 15...
・Second resistor, 16...Selection switch, 17.
...Trigger circuit, 18...Flip-flop circuit, 21...First electric motor, 22...
...first drive transistor, 24...second
Electric motor, 25...second drive transistor.

Claims

[Scope of utility model registration request]

a first magnetic tape for reproducing the signal recorded on the first magnetic tape;
A tape recorder incorporating a first tape recorder portion having a magnetic head and a second tape recorder portion having a second magnetic head for reproducing signals recorded on a second magnetic tape, wherein the first magnetic tape a first preamplifier circuit that amplifies the signal reproduced by the magnetic head; a second preamplifier circuit that amplifies the signal reproduced by the second magnetic head; and the first preamplifier circuit and the second preamplifier circuit. A rectifier circuit that rectifies the signal when a signal from the amplifier circuit is applied, a time constant circuit that includes a capacitor that is charged when there is a rectified output from the rectifier circuit, and a selection for switching the time constant of the time constant circuit. a switch; □ a trigger circuit that outputs a trigger signal when the charged potential of the capacitor constituting the time constant circuit drops below a predetermined value; and an inverting circuit that performs an inverting operation each time a trigger signal from the trigger circuit is applied. and a first electric motor and a second electric motor that are controlled by an output signal of the inverting circuit and drive the first magnetic tape and the second magnetic tape, respectively, and the inverting operation of the inverting circuit causes one motor to move more than the other. 1. A control circuit for a tape recorder, characterized in that the driving motor is switched to the electric motor of 1, and the trigger operation time of the trigger circuit is changed by changing the selection switch.